Explore general as well as scientific information about the movement, chemistry and biology of area surface and ground water environments.
The following data are summarized as seasonal average values for lake and river sampling locations located within the watershed. While these data are useful to serve as a general picture of watershed health, these data must be viewed with caution because these samples have been taken from ecologically different water resources.
Season | Total Nitrogen | Nitrate (NO3) | Total Phosphorus | Orthophosphate | Number of Sample Stations | Number of Samples |
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APR-JUN 2024 | 861 ug/l |
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95 ug/l | 0.04 mg/l | 25 | 38 |
JAN-MAR 2024 | 892 ug/l |
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88 ug/l | 0.02 mg/l | 40 | 70 |
OCT-DEC 2023 | 829 ug/l |
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142 ug/l | 0.04 mg/l | 42 | 83 |
JUL-SEP 2023 | 961 ug/l |
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167 ug/l | 0.06 mg/l | 42 | 84 |
APR-JUN 2023 | 815 ug/l |
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181 ug/l | 0.06 mg/l | 40 | 80 |
JAN-MAR 2023 | 833 ug/l |
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107 ug/l | 0.04 mg/l | 45 | 82 |
OCT-DEC 2022 | 1,002 ug/l |
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103 ug/l | 0.04 mg/l | 46 | 91 |
JUL-SEP 2022 | 979 ug/l |
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106 ug/l | 0.06 mg/l | 47 | 97 |
APR-JUN 2022 | 783 ug/l |
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105 ug/l | 0.05 mg/l | 45 | 83 |
JAN-MAR 2022 | 838 ug/l |
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88 ug/l | 0.13 mg/l | 47 | 84 |
Five Year Seasonal Graph |
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Five Year Graph of All Samples |
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Season | Total Nitrogen | Nitrate (NO3) | Total Phosphorus | Orthophosphate | Number of Sample Stations | Number of Samples |
---|---|---|---|---|---|---|
JAN-MAR 2024 | 803 ug/l |
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39 ug/l |
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7 | 8 |
OCT-DEC 2023 | 816 ug/l |
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32 ug/l |
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55 | 67 |
JUL-SEP 2023 | 789 ug/l |
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23 ug/l |
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78 | 177 |
APR-JUN 2023 | 798 ug/l |
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22 ug/l |
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67 | 93 |
JAN-MAR 2023 | 704 ug/l |
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20 ug/l |
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87 | 197 |
OCT-DEC 2022 | 723 ug/l |
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22 ug/l |
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84 | 141 |
JUL-SEP 2022 | 725 ug/l |
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23 ug/l |
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95 | 179 |
APR-JUN 2022 | 779 ug/l |
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27 ug/l |
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107 | 202 |
JAN-MAR 2022 | 766 ug/l |
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27 ug/l |
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79 | 90 |
Five Year Seasonal Graph |
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Five Year Graph of All Samples |
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Southwest Florida Water Management District calculates the Aquifer Resource Indicator (ARI) for their three groundwater regions each month. The ARI was created to provide the public with a gauge of groundwater levels in their area, so they can develop an understanding of the severity and cycles of drought and recovery. The three regions include: North (Citrus, Hernando, Lake, Levy, Marion, and Sumter counties), Central (Hillsborough, Pasco, Pinellas, and Polk counties), and South (Charlotte, DeSoto, Hardee, Highlands, Manatee, and Sarasota counties). Learn More about the Aquifer Resource Indicator >>
To determine the ARI for a region, each well is compared weekly to its respective low-normal value and the difference is calculated. The weekly differences are reduced to a monthly value for all monitoring wells within a region, and the resulting ARI value represents how far water levels in the aquifer must rise or fall to reach their respective low-normal values.
Stream level and flow data for the Coastal Old Tampa Bay Watershed. Learn More about Stream Flow »
River | Flows Whole River Range | Flows Data by Segment | Levels Whole River Range | Levels Data By Segment |
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Brooker Creek |
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Brushy Creek |
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Double Branch Creek |
NO DATA Recent river flow data is unavailable. |
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Henry Street Canal |
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Rocky Creek |
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Sweetwater Creek |
NO DATA Recent river flow data is unavailable. |
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Curiosity Creek |
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Lake Magdalene Outlet |
NO DATA Recent river flow data is unavailable. |
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Channel G |
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Alligator Creek |
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Lake Tarpon Outfall Canal |
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Longbranch Creek |
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Source(s): Not Available
Source(s): Not Available